Hot dog bun



FIG. 1 is a front view of a hot dog bun showing my new design, a rear view being identical;

FIG. 2 is a left side view of the hot dog bun, a right side view being identical;

FIG. 3 is a top view of the hot dog bun;

FIG. 4 is a bottom view of the hot dog bun; and,

FIG. 5 is a top front side perspective view of the hot dog bun.

The broken lines in FIG. 5 illustrate environment that forms no part of the claimed design. 

CLAIM The ornamental design for a hot dog bun, as shown and described. 